baber/WOPTO huggingface dataset:
Patent GB-1515642-A (GB)
Title: Photochromic glasses
IPC: C03C21/00
Filed: 1976-01-30
Abstract: 1515642 Photochromic glass PILKINGTON BROS Ltd 27 Jan 1977 [30 Jan 1976 8 April 1976] 03814/76 and 14415/76 Heading C1M A photochromic glass comprises as non-photochromic components (in weight percent):- SiO 2  8À5-25 Al 2 O 3  13-36À5 P 2 O 5  7À5-33À5 B 2 O 3  7-28 R 2 O 7-20À5 where R 2 O is one or more of Na 2 O, K 2 O and Li 2 O, Li 2 O not exceeding 5; SiO 2  is at least 16 and B 2 O 3  is less than 8; and Ag 2 O is at least 0À05, over and above the 100% total ofnon-photochromic components. The glass may include 1-21 of R'O, where R<SP>1</SP>O comprises 0-4 MgO, 0-6À5 CaO, 0-10 SrO and/or 0-21 BaO. Also present may be TiO 2  0-6, ZrO 2  0-10, PbO 0-8, HfO 2  0-3 and/or ZnO 0-6. The photochromic component may comprise Ag 2 O 0À06-0À6, CuO 0À005-1, Cl 0-1 and Br 0À08-1 (where Cl + Br is 0À2-2).
Patent GB-394424-A (GB)
Title: Improvements relating to fish plate joints for railway, tramway, and like rails
IPC: E01B11/54
Filed: 1932-02-09
Abstract: 394,424. Fishplate joints for railways &c. ELLISON INSULATIONS, Ltd. and ROWELL, H. W., Wellhead Lane, Perry Barr, Birmingham. Feb. 9, 1932, No. 3815. [Class 104 (ii).] The channel-shaped insulating-plates a, b of rail joints are divided longitudinally for a greater part of their length as shown in Fig. I to enable them to adjust themselves to the stresses at the joints. They may consist of a number of layers of paper or fabric united by synthetic resin and arranged at an angle of 45‹ to one another.
Patent GB-706001-A (GB)
Title: An improved travelling wave oscillator
IPC: H03B5/18
Filed: 1948-02-10
Abstract: 706,001. Travelling wave tubes. COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL. Feb. 10, 1948 [April 19, 1947], No. 3847/48. Class 39(1) [Also in Group XL(c)] A travelling wave oscillator has a feedback channel external to the tube and including a cavity resonator c provided with means for periodically varying its frequency for frequency modulation. As shown cam d secured to rotating shaft a periodically varies the capacity between projections from the cavity walls, but any other device for periodically varying the inductance or capacity may be used, such as a piston; the drive is from an electric motor. The feedback circuit also comprises guide sections g<SP>1</SP>, g<SP>2</SP> coupled to the cavity by mutual inductance or capacity or by holes in the cavity walls, and to the input and output circuits e, s of the tube by dipoles, loops or holes. The guides may be replaced by lines. The device may be used in radar receivers. The Specification as open to inspection under Sect. 91, refers to a frequency varying member such as a stump or frustum ' and suggests that the frequency variation need not be periodical. This subject-matter does not appear in the Specification as accepted.
Patent GB-1205326-A (GB)
Title: Blue disazo dyes and their preparation
IPC: C09B1/32
Filed: 1968-01-25
Abstract: 1,205,326. N,N - bis - (2 - acetoxypropylamino) compounds. E.I. DU PONT DE NEMOURS & CO. 25 Jan., 1968 [31 Jan., 1967], No. 3944/68. Heading C2C. [Also in Divisions C4 and D1] In Example 30, 3-[N,N-bis-(2-acetoxypropyl)- amino]-nitrobenzene is prepared by reacting mnitroaniline with propylene oxide followed by acetic anhydride, the product being extracted with chloroform. This compound may then be reduced with hydrogen using a platinum on charcoal catalyst to give the corresponding amino compound which may then be reacted with methanesulphonyl chloride giving 3<SP>1</SP>-[N,N- bis - (2 - acetoxypropyl) amino] - methanesul - phononilide.
Patent GB-547834-A (GB)
Title: Vibrator-operated electric power converting apparatus
IPC: H02M3/42
Filed: 1941-03-24
Abstract: 547,834. Converting. MASTERADIO, Ltd. and POLLOCK, R. March 24, 1941, No. 3971. [Class 38 (ii)] In a D.C. voltage changer comprising a transformer 4 the primary and secondary circuits of which include a vibratory commutator switch 3, resistance-capacity shunts R1, C1 ... R4, C4 are connected one across each pair of contacts to prevent sparking and consequent shock excitation of the associated circuits. The value of the shunt RC is made equal to where f = vibratory frequency in cycles per second and v = voltage across the contacts. Specification 547,833 is referred to.
Patent GB-424616-A (GB)
Title: Improvements in refining gasoline, mineral oils and tar oils
IPC: C10G27/12
Filed: 1933-07-18
Abstract: Mineral and tar oils are desulphurized by treatment with hydrogen peroxide or alkali peroxide; they may be additionally refined by sulphuric acid.  For example, gasolene from brown coal is shaken with 4--6 per cent of 40--50 per cent hydrogen peroxide solution, and redistilled.  The peroxide treatment may be repeated.  According to the Provisional Specification inorganic peroxides are used.
Patent GB-498775-A (GB)
Title: Improvements in and connected with attachments to guns
IPC: F41A21/30
Filed: 1938-02-09
Abstract: 498,775. Gun-muzzle attachments ; noise and recoil diminishing. BARNES, F. G. Feb. 9, 1938, No. 4031. Convention date, Feb. 9, 1937. [Class 92 (ii)] A muzzle attachment for a gun 8, and stated to be particularly applicable to naval armament, comprises a chamber 7 in which a high vacuum is maintained after the gun is loaded and the breech closed, the projectile, when fired, breaking an easily frangible closure 10. The closures 10 are stored in a magazine 14 along which they are fed by a manually operated rack gear 17, 18, the end closure sliding over the aperture 9 so as to seat on a joint ring 12 when the previously positioned closure has been broken by the passage of the projectile. A seat 11 is provided for the closure for the aperture 9. A perforated baffle 19 with central aperture 20 is fitted, and a connection 13 to a source of vacuum is provided. The length of the chamber 7 is such that the base of the projectile is well clear of the muzzle of the gun before the closure 10 is broken. The provision of the vacuum chamber is stated to increase the muzzle velocity, to reduce the recoil and to minimize the noise of discharge.
Patent GB-982538-A (GB)
Title: Improvements in or relating to ironing tables
Inventor: MCILGREW RICHARD HAROLD
IPC: D06F81/04
Filed: 1963-02-01
Abstract: 982,538. Tables. HOME-EASE Ltd. Jan. 20, 1964 [Feb. 1, 1963], No. 4150/63. Headings A4H and A4W. A foldable ironing table adjustable for height has a top 10 supported by legs 12, 13 pivotally connected intermediate their ends, leg 12 being pivoted to the table top and leg 13 being provided at its upper end with a transversely extending rod 14 to which a movable release member 15 is pivoted and a fixed support member 18 with teeth 21 is fixed in a spaced apart position from the table by struts 19, 20, the member 15 being disengaged from the teeth manually by means of a handle 25 but re-engaging under gravity when released.
Patent GB-949696-A (GB)
Title: Improvements in scrap metal and like shears
IPC: B23D33/02
Filed: 1962-02-02
Abstract: 949,696. Metal sheet feeds. SCHLOEMANN A.G. Feb. 2, 1962 [Feb. 3, 1961], No. 4179/62. Heading B3W. In a sheet metal shears the feed stop comprises the vane of a rotating wheel, the breadth of which is equivalent to the length of the shear blades. A scrap metal shear comprises a fixed lower blade 14 and an upper blade 13 driven by an eccentric 17 mounted on a shaft 1. Also mounted on the shaft is a chain sprocket-wheel 2 which drives a sprocket-wheel 4, through a chain 3, with a reduction ratio of 3 : 1. On the same shaft as the sprocket 4 is a three-vaned wheel 6. Scrap 10 to be cut is fed down a guide 12 until it abuts a vane of the wheel 6 which is in the position shown when the blade 13 is at the top of its stroke. As the blade 13 descends the vane rotates and the scrap moves  down the guide until it is held by the contact of the upper blade. As the scrap is sheared vane moves away so that the sheared-off portion falls freely into the shoot 20.
Patent GB-373128-A (GB)
Title: Improvements in driving gear for roller hot-beds with rollers transversely inclined to the direction of movement of the work
IPC: B21B43/04
Filed: 1931-02-10
Abstract: 373,128. Roller - way conveyers. DEMAG AKT.-GES., Duisburg, Germany. Feb. 10, 1931, No. 4195. Convention date, Feb. 11, 1930. [Class 78 (i).] In roller hot-beds, the inclined rollers are connected by universal joints, such as a Hooke's coupling 8, to driving shafts 2 provided with sprockets 3, the couplings and rollers being in the same plane, and the shafts being disposed at right-angles to the direction in which the rolled bars move. The sprockets 3 are driven by a chain 4 which passes over sprockets 5, 6, the latter being driven by a shaft 7. Instead of the chain, a rack may be employed to drive pinions mounted on the shafts 2.
Patent GB-1379768-A (GB)
Title: Curtain track assembly components
IPC: A47H13/04
Filed: 1972-01-28
Abstract: 1379768 Suspending curtains HUNTER DOUGLAS 28 Jan 1972 4254/72 Heading A4B A combined curtain hook and glider 13 comprises first and second portions 31, 32 extending upwardly from an integral inter-connecting portion 33, the first portion 31 comprising a plurality of prongs 36 for engaging a curtain tape and the second portion 32 comprising a head 34 disposed above a narrower neck 35 for engaging in a downwardly open channel 16 in a curtain track 11. End slots 14 and curtain overlap fittings 12 are provided.
Patent GB-215464-A (GB)
Title: Arch construction for furnaces
IPC: F23M5/04
Filed: 1923-02-13
Abstract: 215,464. Bigelow, F. B. Feb. 13, 1923. Crowns and roofs. - The firebrick arches of steam boiler and other furnaces are composed of separate, adjustably-suspended, removable bricks 21 hung by chains and T-pieces 40 engaging recessed slots in the bricks from pipes &c. 23 carried by the I-beams above the furnace. Crossing slots 44 are provided in the bricks through which the suspending hooks engage, the T-pieces 40. The side bricks 31 are suspended by left and right hand threaded rods and swivelling nuts and are made to touch, without pressure, the arch-plate bricks 18 and to allow relative movement thereof. The end bricks 37 of the arch are also supported by screw-and-nut means and are made to touch the bricks 33 which are carried on the ends of the supporting-pipes. The brick 33 is secured to the pipe &c. by a screwed plug 34 and anchoring-bolt 35 and has a firebrick stop 36. At the front of the furnace each pipe extends through the front plate for the intake of air which is distributed through holes in the pipes to cool the arch and air combustion. Spaced T-bars 28 are supported by the I-beams and nemovable cover-tiles 29 are supported on the flanges of the bars.
Patent GB-714947-A (GB)
Title: Improvements in or relating to electromagnetic transducer head
Inventor: CAMRAS MARVIN
IPC: G11B5/265
Filed: 1952-02-19
Abstract: 714,947. Magnetic recording apparatus. ARMOUR RESEARCH FOUNDATION OF ILLINOIS INSTITUTE OF TECHNOLOGY. Feb. 19, 1952, No. 4359/52. Class 40 (2). A magnetic transducer comprises . a frameshaped support member 13 with an opening 23 therein, across which the legs 15, 16 of the magnetic core are secured by clamps 21, 22, the said legs 15, 16 extending beyond the support member 13 to form non-magnetic gaps 19, 29. The pole faces of the magnetic core are made concave to conform with a support member 27. In the first embodiment, Figs. 1 and 4, the tip of the leg 15 of the core incorporates the erazing head and has a slotted opening 28 forming limbs on which series connected coils 30, 32 are wound carrying the high frequency erazing current. The coil 32 serves also to produce a high-frequency biasing flux across the recording gap 19. The limbs 15, 16 of the core carry record/reproduce winding 11. The ends 25 of clamps 21, 22, holding the core members 14, 15, 16 in overlapping arrangement on the support member 13, are inserted through slots 24 therein and then bent over. In an alternative embodiment, Fig. 5, the core has three limbs 38, 39, 40, the limbs 39, 38 carrying the erazing and biasing coils 48, 63, respectively, and the limb 40 carrying the record/ reproduce coil 49.
Patent GB-1001486-A (GB)
Title: Improvements in the treatment of sulphur containing materials
Inventor: ELLIOTT HERBERT JAMES
IPC: C01B17/00
Filed: 1962-02-05
Abstract: Elemental sulphur and materials containing elemental sulphur may be treated in bulk by heating the sulphur containing material until the sulphur is fused, dispersing the heated material in a liquid diluent medium with which the molten sulphur is not miscible, stirring the diluent medium with a rotary action to maintain a dispersion of discrete molten globules and cooling the sulphur to solidify it while continuing the stirring action whereby the sulphur is obtained as discrete pellets or granules. Pellets are defined as smooth rounded particles like lead shot or pearl barley whilst granules are rougher crystalline particles like granulated sugar.  The liquid diluent medium may be water or an aqueous medium.  The sulphurcontaining materials may be sulphur ores, filter cake containing sulphur, partially purified sulphur, oxide from gas plants or elemental sulphur admixed with inorganic matter.  The method may be carried out batchwise or continuously. In a specific embodiment, sulphur ore containing 50% S is ground to finer than 80 B.S.S. mesh in a pebble mill and slurried with water.  The slurry is fed to a stainless steel pressure vessel which is heated with steam.  Steam is also injected into the vessel to assist both in heating and stirring. A hollow-cone stirrer is used through which steam may also be passed.  To obtain a pellet product, heating is continued when the safety valve on the pressure vessel blows off and the pressure in the vessel is reduced slowly in stages.  For a granular product, heating is discontinued before the safety valve blows and the pressure is released rapidly. A double fusion technique may be used for iron-containing sulphur materials, whilst for acidic-materials, lime may be used for neutralization. The pressure vessel may also be heated by hot flue gases or radiant heat.  Ultrasonic vibrations may be used to assist in stirring. A molten sulphur feed may also be treated.
Patent GB-1384071-A (GB)
Title: Bearings for railway vehicle axles
IPC: F16C33/08
Filed: 1972-01-31
Abstract: 1384071 Bearings VANDERVELL PRODUCTS Ltd 5 Sept 1972 [9 Sept 1971 29 Sept 1971 12 Oct 1971 10 Nov 1971 31 Jan 1972] 42199/71 454081/71 47545/71 52194/71 and 4479/72 Heading F2A  A bearing for a railway axle comprises a bearing block 10 of aluminium silicon alloy having a part-cylindrical recess 11 into which is forced a liner 12 having a preformed bearing surface. The liner is forced into the recess by at least one key 15 engaging an axially extending edge of the liner. The liner comprises a steel backing and a layer of bearing material, e.g. lead based babbitt. The liner may have radially extending faces 14 for receiving axial load. The keys comprise elongate members which extend along the recess on either side of the liner. The keys may be held in place by screws which project beyond the steel backing of the liner, so that when the liner wears, the screws are engaged by the shaft before the backing.
Patent GB-114459-A (GB)
Title: Improvements in or relating to the Carburetting-apparatus of Engines for Aeroplanes and the like.
Inventor: BOERNER ARNO
IPC: F02B33/00
Filed: 1917-03-28
Abstract: 114,459. Boerner, A. March 28, 1917. Charge, treating; reservoir pressure, regulating.- Air is delivered to the carburettor of an aeroplane or like engine under regulable pressure, and means are provided to separate from the air any minute globules of water which it may contain owing to the aeroplane or the like travelling through clouds or fog. The engine 1 drives, through a clutch 5, a pump 4 which forces air into a tank 7 whence it flows past a reducing valve 11 to the carburettor 10. The tank may be provided with an adjustable safety valve 9 or a plurality of differently loaded safety valves which may be locked in succession to obtain an increased pressure. The globules of water are separated from the air by forcing the latter through a nozzle 13 into water or glycerine or a mixture of the two in a container 12, which may be heated, or a series of zig-zag baffles 15, Fig. 2, may be employed for the same purpose. The separator may be bypassed by a pipe 18 with valve 19. Specification 108,664 is referred to.
Patent GB-1498526-A (GB)
Title: Engagement lock
IPC: G09F3/03
Filed: 1975-02-03
Abstract: 1498526 Seals P M REMARK 3 Feb 1975 [5 Feb 1974] 4498/75 Heading B6P Articles to be secured together, such as rings on the body and cap portions of a container, are held between head 2 and hollow block 10 when barb 3 is pushed through slotted retainer 14. The spring-mounted sections click into place behind shoulder 4, then grip on tapered portion 5 as rod is pushed firmly into the block to hold the articles being secured between the head and block. When the seal is to be broken the rod is withdrawn until shears can be inserted to cut it. The barb 3 remains in the hollow block, and prevents insertion of a further rod.
Patent GB-694672-A (GB)
Title: Improvements in or relating to electric incandescent lamps
Inventor: NYE RONALD OLIVER
IPC: H01K1/26
Filed: 1951-02-23
Abstract: 694,672. Electric incandescent lamps. HIVAC, Ltd. Feb. 15, 1952 [Feb. 23, 1951], No. 4505/51. Class 39(ii) A tubular electric incandescent lamp, more particularly of the type used as indicator lamps on telephone switchboards, is provided with a carbon filament 6 that is looped adjacent to the outer end of the bulb and supported out of contact with the bulb by a disc 7 of'mica or other insulating material disposed substantially at right-angles to the axis of the bulb, the disc being provided with either apertures or nicked edge portions through which the legs of the filament or the leading-in wires thereto are passed. As shown, a mica disc 7 is mounted on a metal-rod or wire 8 that is sealed into a glass bead 5 within which the leading-in wires 3, 4 are sealed. In a modification employing a shorter tubular bulb the mica disc is seated upon the glass bead and the leading-in wires, which are sealed within the latter, are splayed outwardly to pass through holes in the disc.
Patent GB-344180-A (GB)
IPC: E05B65/00
Filed: 1930-02-11
Abstract: 344,180. Sliding latches. TERNSTEDT MANUFACTURING CO., 6307, West Fort Street, Detroit, Michigan, U.S.A. -(Assignees of Archer, T. P. ; 461, Burns Drive, and Flynn, J. B. ; 4078, Richton Avenue, both in Detroit, Michigan, U.S.A.) Feb. 11, 1930, No. 4553. Convention date, March 16, 1929. [Class 44.] A latch for a refrigerator door comprises a bolt 12 guided by a rod 15, and a handle 10 having projections 17 which engage a flange 29 on the bolt and withdraw it against the action of a spring 14. The bolt slides within walls 13 and is locked by a key-lock. A lug 32 on the lock cylinder abuts against a shoulder 41 on the bolt and prevents its retraction until the cylinder is turned by a key. The face of the cylinder is recessed to prevent its being turned beyond the locked and unlocked positions. The support plate, which is extended at 9 to protect the door from the operator's hand, casing 7 and ears 8 are stamped from a single piece of metal and the guide member 13 is die-cast. The handle 10 carries a rubber bumper 19.
Patent GB-136718-A (GB)
Title: Apparatus for Recovering Potassium Compounds.
Inventor: FAIRBROTHER HENRY
IPC: C05D3/02
Filed: 1919-02-24
Abstract: 136,718. Fairbrother, H., (Chemical Construction Co.). Feb. 24, 1919. Drawings to Specification. Manures.-Cement kiln gases containing potassium compounds are washed with water or other liquids, the whole being evaporated to dryness without filtration for use as a fertilizer.
Patent GB-101184-A (GB)
Title: Improvements in or relating to Water Tube Boilers.
Inventor: NOBLE ERNEST EDWARD
IPC: F22B37/22
Filed: 1916-03-29
Abstract: 101,184. Noble, E. E. March 29, 1916. Steam and water drums; mud drums.-A corrugated and stepped tube-plate has separated stepped tube-strips B in which the steps are of equal size and equally spaced, each step taking one tube, and in which the like edges of the steps in each strip are in a straight line, whereby all the steps are separated by an equal amount of tube-plate metal. The plate may be bent outwards at the sides F with greater curvature than at the middle, so as to decrease the distortion between the strips. Specifications 8407/00 and 17220/14 are referred to.
Patent GB-1375945-A (GB)
Title: Electrophotogrpahic material
IPC: G03G5/05
Filed: 1972-02-01
Abstract: 1375945 Electro-photographic element RANK XEROX Ltd 1 Feb 1972 4627/72 Heading G2C An electro-photographic element is made by adhering granular or fibrous material of diameter 50 microns to 2 mm to the surface of a photoconductive insulating layer on a support in an area ratio of 5 to 90%. In the embodiments spheres of glass, starch, nickel, diacetyl cellulose or acrylic resin or glass fibres are provided on layer of ZnO in styrenated alkyd resin on paper coated with a conductive polymer. The granular or fibrous material may be scattered on the wet photo-conductive layer immediately after coating the layer, applied as a resinous solution to the photo-conductive layer or applied as a powdered mixture with a resin and adhered to the layer by softening with heat or solvent. The granular or fibrous materials may be colourless, white or coloured.
Patent GB-136720-A (GB)
Title: A Method of Electrically Welding Platinum or other Metal Discs to the Ends or Heads of Metal Screws or Rods.
Inventor: MEACHER WYATT
IPC: B23K11/00
Filed: 1919-02-25
Abstract: 136,720. Meacher, W. Feb. 25, 1919. Welding.-A machine for welding platinum or other metal disks to pieces of metal, e.g. to the points or heads of screws, comprises means for positioning the disks centrally of the screws &c. operated by the movement of the electrode B, which is mounted on a lever b fitted with a weight W, and co-operates with a fixed electrode A, the current being supplied from the secondary of a transformer. The screw &c. is fitted into a recess in the electrode A, its head being flush with the upper surface of A if the disk is to be applied to the head of a screw, or, if to the point, the screw is carried in a divided holder M, Fig. 3, mounted on a holder H on a pivot K, and controlled by a spring which presses the arm against an adjustable stop in the correct position to cooperate with the electrodes, or holds the arm H out of operative position when the head of the screw is being operated on. The disks of platinum &c. are placed singly in cup-shaped recesses G in spring-controlled arms D, Fig. 2, mounted on a common pivot or on two pivots E, and the arms D are opened to deposit a disk in correct position by means of a projection on the lever b which depresses a normally spring-raised conical or wedgeshaped member into recesses F in the arms D, thereby opening these to deposit a disk.
Patent GB-1017161-A (GB)
Title: Pipe-handling apparatus
IPC: E21B19/14
Filed: 1964-02-04
Abstract: 1,017,161. Boring earth &c. RUSTON-BUCYRUS Ltd. Feb. 4, 1964 [Feb. 7, 1963], No. 4685/64. Heading E1F. In a drilling machine having the drill rotating means 25 movable longitudinally along a mast 24, pipe storage racks 27 are each movable in planes containing the axis H of the hole drilled to add pipe sections to or remove sections from the drill pipe string. The mast is erected by a jack 38 and is held in a selected position by pins 97 which pass through openings in the mast and in an arcuate member 21a attached to the machine frame 21. The means 25 is raised and lowered in the mast by a pinion 39 rotated by a chain 36 and engaging a rack 40 on the mast. Each of the racks 27 are carried by links 53, 66, are moved by rams 33, and are held in the storage position by latches 90. The pipe sections are held in the racks 27 by means of sockets 61 and clamps 70 which are arranged to free the section as the section is raised after being connected to the rotating means whilst the socket is supported by the string. When joints between a section and the string or between the rotating means and the string are broken the string is held by clamps 102.